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Megasquirt 2 - External wiring layouts
This is a general external wiring layout. See the ignition hardware manual for details on controlling different ignition systems and the DIY options for multiple spark outputs. SPR1,2,3,4 and IAC1A,1B,2A,2B are not connected to anything as standard - there are solder-pads on the circuit board inside the case that you can DIY connect to input and output circuits of your choice. When using 4-wire stepper idle, the IAC wires should be jumpered on the circuit board to the corresponding IAC pads under the CPU and jumper S12C-JS9. For CAN, jumper SPR1-JS6, SPR2-JS8 V2.2 External wiring
DIYAutoTune.com Megasquirt Kits / Assembled Engine Management Systems, Wideband o2 Sensor Systems and tuning products
Welcome to DIYAutoTune.com. The place on the web for all of your Do-It-Yourself (DIY) automotive tuning needs. We have everything you need to install your own fully programmable Engine Management System on almost any engine in any car / truck / motorcycle / boat / snowmobile, you name it! For the hardcore DIY'er who wants to actually build your own EMS, we've got you covered, for others who'd prefer we build you up an ECU to your specs so you can just worry about the wiring and tuning side of things (with our help of course), we've got you covered too!
For discussing injector selection, manifold modifications , throttle bodies , fuel supply system design and construction , and FIdle valves and IACs . This forum is for discussing ignition setup , tuning , and troubleshooting for MS-II. Click these links for info on GM's HEI , EDIS , direct coil control , others . For discussing Phil Tobin's TunerStudio MS is the MegaSquirt edition of TunerStudio, a next generation tuning application.